9998668 has 6 divisors (see below), whose sum is σ = 17497676. Its totient is φ = 4999332.

The previous prime is 9998641. The next prime is 9998689. The reversal of 9998668 is 8668999.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1249830 + ... + 1249837.

Almost surely, 2^9998668 is an apocalyptic number.

It is an amenable number.

9998668 is a deficient number, since it is larger than the sum of its proper divisors (7499008).

9998668 is a wasteful number, since it uses less digits than its factorization.

9998668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2499671 (or 2499669 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 55.

The square root of 9998668 is about 3162.0670454625. The cubic root of 9998668 is about 215.4339028884.

The spelling of 9998668 in words is "nine million, nine hundred ninety-eight thousand, six hundred sixty-eight".